Iosevka Comfy

Iosevka (Can Only Modify a Font, Yes)

Highly customised build of the Iosevka typeface, with a rounded style and open shapes, adjusted metrics, and overrides for almost all individual glyphs in both roman (upright) and italic (slanted) variants.

IMAGES HERE: https://protesilaos.com/emacs/iosevka-comfy-pictures.

Details of the base typeface

Iosevka Comfy is more vertically compact than the standard upstream configuration. Glyphs are rounder and have tailed ends or serifs only when those are required to both impose a predictable rhythm and keep characters distinct from each other.

The round and open shapes, tailed ends, and earless shoulders, can be discerned in those patterns:

• a, o, u (e.g. anonymous);
• i, t, l (e.g. illicit);
• j, g, y (e.g. jiggly);
• b, d (e.g. bidirectional);
• n, m (e.g. numeral);
• p, q (e.g. equip);
• 6, 9, &.

Considerations for romans and italics

Roman and italic variants are made to look more consistent while retaining their stylistic features. Unlike the default Iosevka style, the upright glyphs do not have a mixture of straight/blocky and curved or serified characters (special exceptions notwithstanding). While the italics do not have calligraphic tendencies that greatly contrast with their counterparts. The differences within each character set and between the variants themselves are nuanced. The intent is to make everything feel part of the same aesthetic. Distinctions are drawn on the premise of contributing to the demands of the design without ever calling attention to themselves (as opposed to sporadic calligraphic glyphs amid an otherwise austere presentation).

For italics, the earless shoulders and rounded bottom in the glyphs a, b, d, n, m, p, q, u change slightly to have a sturdier ending which helps compensate for the added slant. Otherwise they would feel more rounded than their roman counterparts. We do not want that added implicit emphasis of extra roundedness because the slant is already sufficient: to emphasise the emphasis is the kind of exaggeration that Iosevka Comfy strives to eliminate.

The target of small point size

The overall appearance of the typeface is optimised for small point sizes. This informs the choice of certain glyphs that break the established patterns:

• The D has a top and bottom serif and a curved body to disambiguate it from the capital O (which is more round). At small point sizes, our TODO looks clear whereas with a non-serif D it reads like TOOO (the D is almost the same as an O).

• Same principle for I whose serifs help one tell it apart from l.

• The m has a short middle leg to prevent the letter's lines from visually blending into a box-like shape (as is the case with the default Iosevka at small point sizes). It otherwise exhibits the same rounded/earless patterns.

The target of small point sizes also informs the decision to use squared punctuation marks and a dotted % sign (the percent looks like ./. instead of o/o). They look more crisp.

It is important to stress that these decisions are made in light of the target range of small point sizes, which for the author is between 8 and 13. If we were to design towards another end, then we would do things differently (the open shapes would not be necessary, the aforementioned exceptions would not be required, punctuation marks could be circular, and so on).

Optimal small point sizes for the author are: 8, 10, 11, 13. While "false friends" which increase the height of characters without actually adjusting the line width and height are: 10.5, 12, 13.5. We call them "false friends" because while they appear to have an effect, they do not actually increase the size of the font consistently: they break expectations and make the overall appearance feel more vertically compact than it should be.

Those granted, Iosevka Comfy looks decent at larger point sizes. The author uses it for presentations because its open shapes make it easy to read.

[ For the :height face attribute in GNU Emacs, the value is equal to the point size × 10. ]

Variants

Iosevka Comfy comes in seven variants:

• iosevka-comfy is monospaced and supports ligatures. Apart from ligatures, it allows certain glyphs, such as arrows, to occupy more than one block.

• iosevka-comfy-motion is like iosevka-comfy but with lots of small tweaks that add serifs and tailed ends to relevant glyphs. Put sipmly this is the pseudo-serif version of the otherwise sans-serif base style.

• iosevka-comfy-duo is quasi-proportional and supports ligatures. The naturally wide glyphs, such as i, are allowed to occupy their natural width instead of one space.

• iosevka-comfy-motion-duo is like iosevka-comfy-duo but with the serified style of iosevka-comfy-motion.

• iosevka-comfy-fixed is like iosevka-comfy albeit strictly monospaced and thus does not support ligatures. All glyphs are exactly the same width. Use this if you prefer it or if your application (e.g. terminal emulator) does not recognise iosevka-comfy as a monospaced font.

• iosevka-comfy-wide is the same as iosevka-comfy except it is noticeably wider. It also looks taller than iosevka-comfy even though both variants fit the same number of lines on a screen.

• iosevka-comfy-wide-fixed same as iosevka-comfy-wide though it is strictly monospaced and does not support ligatures.

Install on GNU/Linux

Unless you have some exotic system, in which case you know what you are doing, you can install fonts for your local user by copying the .ttf files or their directories in ~/.local/share/fonts/. For system-wide installation, place them in /usr/share/fonts/.

Depending on your system, you may need to delete the ttf or ttf-unhinted builds. Though this is not strictly necessary, as the system knows which one to pick.

When in doubt, install locally.

Build information

Iosevka Comfy is configured in accordance with the documentation of the upstream project. This practically means that we define our private-build-plans.toml, install the npm dependencies, and then build the .ttf files with something like the following for each variant:

npm run build -- ttf::iosevka-comfy

Or this loop:

for i in iosevka-comfy iosevka-comfy-wide iosevka-comfy-fixed iosevka-comfy-wide-fixed iosevka-comfy-motion iosevka-comfy-duo iosevka-comfy-motion-duo ; do npm run build -- ttf::$i ; done

The last update to Iosevka Comfy was done on 2022-09-10 using upstream version v16.2.0, commit b7a59ee4.

Each file is provided as-is in the hope that it may prove useful, but is otherwise intended only for my private use.